Farmers stand beside their tractors parked to block the road to Belgrade in the city of Pancevo March 30, 2012. Hundreds of disgruntled farmers in northern Serbia blockaded key roads linking Vojvodina province to the capital Belgrade for a second day on Friday to protest over government's introduction of new subsidies on 2012 crop production. Serbian police were deployed throughout the area and near the northern town of Pancevo to prevent farmers from driving tractors to the agriculture ministry and other government buildings in central Belgrade. REUTERS/Ivan Milutinovic (SERBIA - Tags: POLITICS CIVIL UNREST SOCIETY AGRICULTURE)